US12030702B2 - Can lid made of resin laminate steel sheet for resin-metal composite container, can bottom made of resin laminate steel sheet for resin-metal composite container, and resin-metal composite container - Google Patents

Can lid made of resin laminate steel sheet for resin-metal composite container, can bottom made of resin laminate steel sheet for resin-metal composite container, and resin-metal composite container Download PDF

Info

Publication number
US12030702B2
US12030702B2 US17/290,453 US202017290453A US12030702B2 US 12030702 B2 US12030702 B2 US 12030702B2 US 202017290453 A US202017290453 A US 202017290453A US 12030702 B2 US12030702 B2 US 12030702B2
Authority
US
United States
Prior art keywords
resin layer
resin
steel sheet
ethylene
based resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US17/290,453
Other languages
English (en)
Other versions
US20220033136A1 (en
Inventor
Nobuo Kadowaki
Kazushi IWAKIRI
Tomohiro Mizutani
Satoshi Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Assigned to NIPPON STEEL CORPORATION reassignment NIPPON STEEL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IWAKIRI, KAZUSHI, KADOWAKI, NOBUO, KATO, SATOSHI, MIZUTANI, TOMOHIRO
Publication of US20220033136A1 publication Critical patent/US20220033136A1/en
Application granted granted Critical
Publication of US12030702B2 publication Critical patent/US12030702B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/38—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by soldering, welding, or otherwise uniting opposed surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/06—Integral, or permanently secured, end or side closures
    • B65D17/08—Closures secured by folding or rolling and pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums
    • B65D15/16—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of plastics material
    • B65D15/18—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made of plastics material with end walls made of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/24—Connections between walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/06—Integral, or permanently secured, end or side closures
    • B65D17/12—Closures secured by soldering, welding, or otherwise uniting opposed surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4011—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening completely by means of a tearing tab
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape
    • B65D7/04—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape of curved cross-section, e.g. cans of circular or elliptical cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/05—5 or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2435/00—Closures, end caps, stoppers
    • B32B2435/02—Closures, end caps, stoppers for containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/66—Cans, tins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/02—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions of curved cross-section, e.g. cans of circular or elliptical cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0013—Action for opening container pull-out tear panel, e.g. by means of a tear-tab
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0059—General cross-sectional shape of container end panel
    • B65D2517/0061—U-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/008—Materials of container end panel
    • B65D2517/0082—Coated or laminated metal
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/14—Copolymers of propene

Definitions

  • the present invention relates to a can lid made of a resin laminate steel sheet for a resin-metal composite container, a can bottom made of a resin laminate steel sheet for a resin-metal composite container, and a resin-metal composite container, and particularly to a can lid made of a resin laminate steel sheet for a resin-metal composite container and a can bottom made of a resin laminate steel sheet for a resin-metal composite container to be seamed and fused to a container body having a can body made of a polypropylene-based thermoplastic resin, and a resin-metal composite container having a can body made of a polypropylene-based thermoplastic resin.
  • Priority is claimed on Japanese Patent Application No. 2019-020682, filed Feb. 7, 2019, the content of which is incorporated herein by reference.
  • the mainstream container for long-term storage of food is a food can consisting of a can body, a can lid, and a can bottom made of metal.
  • a metal since the contents of a metal can cannot be seen unless the can is opened, in recent years, retort pouch containers made of a transparent resin have become widespread for applications that do not require as long-term storage as cans do.
  • a retort pouch container made of a resin is a container obtained by filling a container having a bag shape formed by heat-sealing a resin film with food and heat-sealing the opening end, and has an advantage that the contents in the container can be visually confirmed by using a transparent film.
  • the container itself is a resin film, there is a disadvantage that the piercing strength is low.
  • Patent Document 1 Japanese Unexamined Patent Application, First Publication No. H10-305871
  • the surfaces of the steel sheets of the can lid and the can bottom are coated with a resin layer that can be fused to the resin on the can body side.
  • the resin on the can body side and the resin layer coating the surface on the can lid and the can bottom side need to be a thermoplastic resin. It is preferable that the melting point of the thermoplastic resin in the resin layer to be coated is low.
  • a polyethylene (hereinafter, referred to as PE)-based resin may meet this condition, but is not suitable for practical use because its melting point is near the retort sterilization treatment temperature (120° C. to 130° C.).
  • the polypropylene (PP)-based resin has excellent retort resistance and can be thermally fusion-bonded at a relatively low temperature of about 200° C. Therefore, the polypropylene-based resin is preferable as the kind of resin.
  • the resin coating the can lid is the same on the inner and outer surfaces, there are cases where the resin on the outer surface side of the can lid also melts when the can body and the can lid are fused, and the film is damaged.
  • the metal sheet of the can lid and the can bottom is aluminum, it is difficult to generate heat even if electromagnetic induction heating (IH) is performed, so the heating tool is pressed directly against the can lid and the can bottom fuse the can body, the can lid, and the can bottom in many cases. However, in these cases, the coating of the can lid and the can bottom is easily damaged.
  • IH electromagnetic induction heating
  • the present invention is an invention that has been made in view of the above-described circumstances, and an object thereof is to provide a can lid made of a resin laminate steel sheet for a resin-metal composite container, and a can bottom made of a resin laminate steel sheet for a resin-metal composite container capable of obtaining high seaming strength with a can body when seamed and fused to the can body made of a transparent to translucent thermoplastic resin, and having excellent manufacturability and surface quality.
  • Another object of the present invention to provide a resin-metal composite container having excellent surface quality and high seaming strength, using a can lid made of a resin laminate steel sheet for a resin-metal composite container, and a can bottom made of a resin laminate steel sheet for a resin-metal composite container.
  • a laminate steel sheet including a thermoplastic polyester-based resin layer provided at a first surface of a steel sheet on the outside of a resin-metal composite container to be in contact with the steel sheet, a modified polypropylene-based resin layer provided at a second surface of the steel sheet on the inside of the resin-metal composite container to be in contact with the steel sheet, a polypropylene-based resin layer provided as an upper layer of the modified polypropylene-based resin layer to be in contact with the modified polypropylene-based resin layer, and an ethylene-propylene copolymer resin layer provided as an upper layer of the polypropylene-based resin layer to be in contact with the polypropylene-based resin layer and having a specific ethylene component proportion, and controlling the thickness and melting point of each layer, high sealability for a can body (can body made of a polypropylene-based resin) made of a polypropylene-based resin is provided.
  • the layers are simply called (1) the PE-PP layer, (2) the PP layer, (3) the modified PP layer, (4) the steel sheet, and (5) the PET layer, and the entirety of (1) the PE-PP layer, (2) the PP layer, and (3) the modified PP layer of the resin layer to be thermally fusion-bonded to the can body side is called a PP-based resin layer (PP-based laminated resin layer) 5 .
  • the can lid and the can bottom made of a resin laminate steel sheet for a resin-metal composite container of the present invention can obtain high seaming strength with the can body when seamed and fused to the can body made of a transparent to translucent thermoplastic resin, do not cause fusion of the film to a laminating roll when the resin laminate steel sheet is manufactured, and thus have excellent manufacturability and surface quality.
  • the resin-metal composite container of the present invention uses the can lid and the can bottom made of a resin laminate steel sheet for a resin-metal composite container and thus has excellent surface quality and high seaming strength.
  • FIG. 1 is a perspective view of a can lid made of a resin laminate steel sheet for a resin-metal composite container according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along the line A-A′ of the can lid made of a resin laminate steel sheet for a resin-metal composite container according to the embodiment of the present invention.
  • FIG. 5 is a perspective view of a can bottom made of a resin laminate steel sheet for a resin-metal composite container according to the embodiment of the present invention.
  • FIG. 7 is a perspective view of the can bottom made of a resin laminate steel sheet for a resin-metal composite container according to the embodiment of the present invention, which is seamed onto the can body.
  • FIG. 8 is a cross-sectional view taken along the line B-B′ of the can bottom made of a resin laminate steel sheet for a resin-metal composite container according to the embodiment of the present invention, which is seamed onto the can body.
  • FIG. 10 is an example of an enlarged schematic view of the region A of a cross section of the can lid and the can bottom made of a resin laminate steel sheet for a resin-metal composite container according to the embodiment of the present invention.
  • FIG. 11 is a diagram showing the proportion of a PE component in an ethylene-propylene copolymer resin layer of a resin laminate steel sheet and determination results of the sealability of a seamed portion.
  • FIG. 16 is a diagram showing the thickness of a polypropylene-based resin layer of the resin laminate steel sheet and the result of determining resin fusion to a heating roll during film laminating.
  • FIG. 19 is an example of the external appearance of a resin-metal composite container in the related art.
  • a can lid and a can bottom are made of a resin laminate steel sheet, the can lid and the can bottom include, in order from the content side of the can, (1) a PE-PP layer (ethylene-propylene copolymer resin layer) 4 , (2) a PP layer (polypropylene-based resin layer) 3 , (3) a modified PP layer (modified polypropylene-based resin layer) 2 , (4) a steel sheet (steel sheet) 1 , and (5) a PET layer (thermoplastic polyester-based resin layer) 6 , and by setting the ranges of the PE proportion (the proportion of an ethylene component), melting point, and thickness of (1) the PE-PP layer (ethylene-propylene copolymer resin layer) 4 , the thickness of (2) the PP layer (polypropylene-based resin layer) 3 , and the thickness of (3) the modified PP layer (modified polypropylene-based resin layer) 2 , the
  • a can lid and a can bottom made of a resin laminate steel sheet for a resin-metal composite container include: a top sheet portion made of a resin laminate steel sheet; and a curved portion made of the resin laminate steel sheet and located at an outer periphery of the top sheet portion, in which the resin laminate steel sheet uses a laminate steel sheet including a thermoplastic polyester-based resin layer provided at a first surface of a steel sheet which is on the outside of a resin-metal composite container to be in contact with the steel sheet, a modified polypropylene-based resin layer provided at a second surface of the steel sheet which is on the inside of the resin-metal composite container to be in contact with the steel sheet, a polypropylene-based resin layer provided as an upper layer of the modified polypropylene-based resin layer to be in contact with the modified polypropylene-based resin layer, and an ethylene-propylene copolymer resin layer provided as an upper layer of the polypropylene-based resin layer to be in
  • FIG. 1 is a perspective view of the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container according to the present embodiment.
  • FIG. 2 is a cross-sectional view taken along the line A-A′ of the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container.
  • FIG. 3 is a perspective view of the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container after being seamed onto a can body 102 .
  • FIG. 1 is a perspective view of the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container according to the present embodiment.
  • FIG. 2 is a cross-sectional view taken along the line A-A′ of the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container.
  • FIG. 3 is a perspective view of the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container after being seamed onto a can body 102 .
  • FIG. 4 is a cross-sectional view taken along the line B-B′ of the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container, which is seamed onto the can body 102 .
  • FIG. 5 is a perspective view of the can bottom 101 made of a resin laminate steel sheet for a resin-metal composite container according to the present embodiment.
  • FIG. 6 is a cross-sectional view taken along the line A-A′ of the can bottom 101 made of a resin laminate steel sheet for a resin-metal composite container.
  • FIG. 7 is a perspective view of the can bottom 101 made of a resin laminate steel sheet for a resin-metal composite container after being seamed onto the can body 102 .
  • FIG. 5 is a perspective view of the can bottom 101 made of a resin laminate steel sheet for a resin-metal composite container according to the present embodiment.
  • FIG. 6 is a cross-sectional view taken along the line A-A′ of the can bottom 101 made of a resin laminate steel sheet for
  • FIG. 8 is a cross-sectional view taken along the line B-B′ of the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container, which is seamed onto the can body 102 .
  • FIG. 9 is a perspective view of the resin-metal composite container 200 according to the present embodiment.
  • FIG. 10 is an enlarged view of a portion (region A) of the cross-sectional views taken along the line A-A′ of FIGS. 2 and 6 for describing the configuration of a resin laminate steel sheet 20 used in the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container and the can bottom 101 made of a resin laminate steel sheet for a resin-metal composite container.
  • the resin-metal composite container (can) 200 includes the can lid 100 and the can bottom 101 made of a resin laminate steel sheet for a resin-metal composite container according to the present embodiment, and the can body 102 .
  • the resin-metal composite container 200 includes a first seamed portion 21 formed by seaming the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container and the can body 102 .
  • the first seamed portion 21 includes a first fused portion 23 in which the can body 102 and the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container are fused.
  • thermoplastic polyester-based resin layer 6 is at an outside bend of the curved portion 30 and a second surface provided with the PP-based resin layer 5 is at an inside bend of the curved portion 30 so as to be fused to the can body 102 .
  • the melting point of the ethylene-propylene copolymer resin layer 4 which is the outermost layer of the PP-based resin layer 5 , is lower than 135° C.
  • the ethylene-propylene copolymer resin layer 4 is softened when a retort sterilization treatment (at a temperature of 120° C. to 130° C.), and there are cases where the content leaks from the seamed portion.
  • the melting point of the ethylene-propylene copolymer resin layer 4 exceeds 150° C., it takes time for the ethylene-propylene copolymer resin layer 4 of the seamed portion to melt, so that the adhesion of the seamed portion becomes unstable in a case where the seamed portion is fused within a short period of time, which is not preferable. Furthermore, in a case where the melting point of the ethylene-propylene copolymer resin layer 4 exceeds 150° C., the ethylene-propylene copolymer resin layer 4 may be partially crystallized and whitened during the retort treatment, which is not preferable.
  • the melting point of the ethylene-propylene copolymer resin layer 4 is defined as the temperature of the main endothermic peak when thermal analysis was performed with a differential scanning-type calorimeter (DSC).
  • the main endothermic peak means a peak having the largest endothermic amount.
  • the DSC apparatus used for the melting point measurement is DSC7030 manufactured by Hitachi High-Tech Science Corporation, and measurement was performed by enclosing 5 to 8 mg of the resin in an aluminum pan and raising the temperature in a nitrogen atmosphere at a temperature rising rate of 10° C./min.
  • the adhesion between the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container and the can body 102 is good, and the outer surface side of the can lid 100 made of a resin laminate steel sheet for a resin-metal composite container is not easily damaged and is beautiful, which is preferable.
  • the heating temperature of the resin laminate steel sheet 20 of the can bottom 101 made of a resin laminate steel sheet for a resin-metal composite container preferably has the same condition as that of the can lid.
  • the PE proportion (sometimes referred to as the proportion of the ethylene component) of the ethylene-propylene copolymer resin layer 4 will be described below.
  • the proportion of the ethylene component was obtained from the following confirmation experiment of the proportion of the ethylene component.
  • the upper and lower limits of the amount of the ethylene component (the proportion of the ethylene component) of the ethylene-propylene copolymer in the ethylene-propylene copolymer resin layer 4 are determined by two methods including a method of performing determination by a weight reduction ratio of the can after a water-packed can is subjected to a retort treatment (can sealability determination method) and a method of aligning the same resin sheet as the polypropylene-based resin forming the can body and the PP-based resin layer 5 side of the resin laminate steel sheet 20 , performing heating and pressure bonding thereon, and thereafter performing determination with a peeling strength after performing a retort treatment.
  • a retort treatment can sealability determination method
  • a film attached to the can lid inner surface side of a steel sheet for a can lid and a can lid, that is, a PP-based resin film forming the PP-based resin layer was produced as follows.
  • a film was produced by extruding an ethylene-propylene copolymer resin (ethylene-propylene random copolymer) as a first layer (5.0 ⁇ m, ethylene component proportion 0 to 60 mass %), a polypropylene-based resin (homopolypropylene) as a second layer (intermediate layer) (10.0 ⁇ m), and a modified polypropylene-based resin (maleic acid-modified polypropylene) as a third layer (5.0 ⁇ m) at 200° C. with a three layer co-extrusion film forming apparatus.
  • ethylene-propylene copolymer resin ethylene-propylene random copolymer
  • first layer 5.0 ⁇ m, ethylene component proportion 0 to 60 mass %
  • a polypropylene-based resin homopolypropylene
  • second layer intermediate layer
  • a modified polypropylene-based resin maleic acid-modified polypropylene
  • the above-mentioned PP-based resin film (the modified polypropylene-based resin layer side was bonded to the steel sheet) and an existing PET-based resin film were rolled and pressure-bonded to be laminated on 0.2 mm thick tinfree steel heated to 250° C. to produce a laminate steel sheet for a can lid and a can bottom.
  • a method of evaluating the can lid according to the embodiment of the present invention and a method of evaluating the can bottom according to the embodiment of the present invention were carried out in the same manner.
  • the method of evaluating the can lid will be described below as a representative example.
  • the produced resin laminate steel sheet was subjected to forming so that the surface on the can inner surface side of the can lid was the PP-based resin layer side was and the can outer surface side was the thermoplastic polyester-based resin layer side.
  • the can bottom made of the above-mentioned resin laminate steel sheet was seamed onto a cylindrical can body (2.0 mm) made of a polypropylene-based resin so that the can inner surface side was the PP-based resin layer and the can outer surface side was the thermoplastic polyester-based resin layer, and thereafter the seamed portion was heated by an IH heating device (200° C., heating time 1.0 second) so that the PP-based resin layer of the can bottom on the can inner surface side and the polypropylene-based resin of the can body were thermally fusion-bonded together.
  • IH heating device 200° C., heating time 1.0 second
  • the seamed portion of the can lid was heated by the IH heating device, thereby producing a can sample.
  • the can weight of the water-packed test can thus produced was measured with an electronic balance to the number of grams with three decimal places, and the can was subjected to a retort treatment in a retort oven at 125° C. for 30 minutes.
  • the weight of the can subjected to the retort treatment was measured again with the electronic balance to the number of grams with three decimal places. In a case where the weight was reduced by 0.20 mass % or more, it was considered that liquid leakage had occurred and the case was regarded as being unacceptable. In a case where the weight reduction ratio was 0.05 mass % or more and less than 0.20 mass %, the weight loss was not so high that liquid leakage was determined and was determined to be acceptable. In a case where the weight reduction ratio was less than 0.05 mass %, the weight reduction ratio was within a measurement error range, so that the sealability of the can was determined to be good.
  • the fusibility between the polypropylene resin of the can body and the resin laminate steel sheet was determined by the following method, and the resin configuration of the film on the inner surface side of the can lid was determined.
  • the proportion of the ethylene component in the ethylene-propylene copolymer in the ethylene-propylene copolymer resin layer exceeds 45.0 mass %, the surface layer of the film becomes soft, and irregularities are likely to be generated on the surface of the film during film lamination and cause the surface to be rough, which is not preferable.
  • the proportion of the ethylene component in the ethylene-propylene copolymer can be obtained, for example, by infrared micro-spectrometry.
  • the ratio (peak intensity ratio) between a peak intensity at 974 cm ⁇ 1 and a peak intensity at 721 cm ⁇ 1 attributed to propylene is obtained from an IR spectrum obtained by measuring the ethylene-propylene copolymer in which the proportion of the ethylene component is changed, with an infrared micro-spectrometer.
  • a calibration curve is created from the proportion of the ethylene component and the peak intensity ratio.
  • the proportion of the ethylene component can be obtained from the peak intensity ratio of the ethylene-propylene copolymer of the ethylene-propylene copolymer resin layer 4 and the calibration curve.
  • the peeling strength which is an index of the fusibility between the can body made of a polypropylene resin and the seamed portion of the can lid, is good when the proportion of the ethylene component in the ethylene-propylene copolymer in the ethylene-propylene copolymer resin layer is in a range of 1.0 mass % or more and 55.0 mass % or less.
  • FIG. 13 is a diagram in which the horizontal axis represents the melting point of the ethylene-propylene copolymer resin layer (the melting point of the PE-PP layer) of the resin laminate steel sheet and the vertical axis represents the determination result of the peeling strength.
  • FIG. 16 is a diagram showing the relationship between the determination result of the fusibility of the film to a heating roll when the PP-based resin film is laminated by a film laminating apparatus ( FIG. 18 ) described later (the determination result of the fusibility of the film to the heating roll during lamination) and the average thickness of the polypropylene-based resin layer 3 (the thickness of the PP layer). As can be seen from FIG.
  • the can lid made of a resin laminate steel sheet for a resin-metal composite container or the can bottom 101 made of a resin laminate steel sheet for a resin-metal composite container and the can body 102 are seamed and fused together, even if the heating tool for sealing comes into contact with the resin layer on the outer surface side, the case where the film is damaged can be reduced.
  • a method of seaming and fusing the can body 102 made of the PP resin and the can lid and the can bottom in addition to a method of pressing the heating tool against the can lid and the can bottom, a method of locally heating and melting the resin of the seamed portion by performing electromagnetic induction heating on the steel sheet of the can lid and the can bottom made of a resin laminate steel sheet by IH heating is preferable because the film is less likely to be damaged due to the heating tool coming into contact with the film.
  • the resin of the thermoplastic polyester-based resin layer 6 may be a stretched film or an unstretched film, and is not particularly limited. However, a stretched film is superior in corrosion resistance and strength to an unstretched film, is less expensive than an unstretched film, and is thus more preferable.
  • the resin of the thermoplastic polyester-based resin layer 6 specifically, there are polyethylene terephthalate, a copolymer of ethylene terephthalate and ethylene isophthalate (IA-PET), a copolymer of polyethylene terephthalate and polybutylene terephthalate (PET-PBT), a copolymer of polyethylene terephthalate and cyclohexanedimethanol (PETG), and mixtures thereof.
  • IA-PET ethylene terephthalate
  • PET-PBT polybutylene terephthalate
  • PETG cyclohexanedimethanol
  • the average thickness of the thermoplastic polyester-based resin layer 6 of the resin laminate steel sheet 20 is not particularly limited, but may be about 30.0 ⁇ m or less because the thermoplastic polyester-based resin layer 6 is on the outer surface side of the can lid and the can bottom and does not particularly require corrosion resistance.
  • the lower limit of the thickness of the thermoplastic polyester-based resin layer 6 is not particularly limited, but is preferably 10.0 ⁇ m or more because if the thickness is too small, film wrinkles are likely to occur in the laminate when the laminated steel sheet is manufactured.
  • a coloring pigment or dye such as titanium white or carbon black may be mixed and dispersed in the thermoplastic polyester-based resin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
US17/290,453 2019-02-07 2020-02-06 Can lid made of resin laminate steel sheet for resin-metal composite container, can bottom made of resin laminate steel sheet for resin-metal composite container, and resin-metal composite container Active 2041-12-16 US12030702B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019020682 2019-02-07
JP2019-020682 2019-02-07
PCT/JP2020/004475 WO2020162524A1 (ja) 2019-02-07 2020-02-06 樹脂金属複合容器用樹脂ラミネート鋼板製缶蓋、樹脂金属複合容器用樹脂ラミネート鋼板製缶底、及び樹脂金属複合容器

Publications (2)

Publication Number Publication Date
US20220033136A1 US20220033136A1 (en) 2022-02-03
US12030702B2 true US12030702B2 (en) 2024-07-09

Family

ID=71947654

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/290,453 Active 2041-12-16 US12030702B2 (en) 2019-02-07 2020-02-06 Can lid made of resin laminate steel sheet for resin-metal composite container, can bottom made of resin laminate steel sheet for resin-metal composite container, and resin-metal composite container

Country Status (5)

Country Link
US (1) US12030702B2 (ja)
EP (1) EP3922455B1 (ja)
JP (1) JP6753557B1 (ja)
CN (1) CN113195228B (ja)
WO (1) WO2020162524A1 (ja)

Citations (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3547305A (en) * 1968-11-15 1970-12-15 Continental Can Co Easy opening container
US3580464A (en) * 1969-03-17 1971-05-25 Owens Illinois Inc Hermetically sealed composite container
US3832963A (en) * 1971-10-19 1974-09-03 Aluminum Co Of America Thermally treated container wall
US3861976A (en) * 1971-10-19 1975-01-21 Aluminum Co Of America Laminated container wall
US4403710A (en) * 1981-05-13 1983-09-13 Toyo Seikan Kaisha Ltd. Easily-openable heat seal lid
US4451506A (en) * 1979-06-30 1984-05-29 Toyo Seikan Kaisha Ltd Side seam-coated welded cans and process for preparation thereof
US4501375A (en) * 1983-02-15 1985-02-26 Toyo Seikan Kaisha, Ltd. Easily-openable heat-seal lid
US4588621A (en) * 1983-02-10 1986-05-13 Compagnie Francaise De Raffinage Container body of the composite type and container comprising said body
US4589568A (en) * 1983-04-23 1986-05-20 Terumo Corp. Package
US4658434A (en) * 1986-05-29 1987-04-14 Grain Security Foundation Ltd. Laminates and laminated articles
US4692132A (en) * 1982-06-30 1987-09-08 Toyo Seikan Kaisha, Ltd. Process for preparing a sealed laminated vessel
US4741934A (en) * 1985-04-19 1988-05-03 Nippon Steel Corporation Steel sheet for making cans, cans and a method making cans
US4945008A (en) * 1987-10-15 1990-07-31 Cmb Packaging (Uk) Limited Laminated metal sheet
US4957820A (en) * 1987-10-15 1990-09-18 Cmb Foodcan Plc Laminated metal sheet
US4980210A (en) * 1987-10-15 1990-12-25 Cmb Foodcan Plc Laminates of polyolefin-based film and metal and processes for producing such laminates
EP0408268A2 (en) * 1989-07-10 1991-01-16 CarnaudMetalbox plc Method and apparatus for manufacturing a ring for a container closure
US5069355A (en) * 1991-01-23 1991-12-03 Sonoco Products Company Easy-opening composite closure for hermetic sealing of a packaging container by double seaming
US5079052A (en) * 1987-10-15 1992-01-07 Cmb Foodcan Plc Laminated metal sheet
US5093208A (en) * 1987-10-15 1992-03-03 Cmb Foodcan Plc Laminated metal sheet
US5100708A (en) * 1987-10-15 1992-03-31 Cmb Foodcan Plc Laminated metal sheet
US5348809A (en) * 1991-11-08 1994-09-20 Nippon Steel Corporation Sheet steel easy open can lid superior in can openability and not requiring repair coating of inner and outer surfaces
US5582319A (en) * 1992-03-06 1996-12-10 Carnaudmetalbox Plc Can end formed from laminated metal sheet
US5597436A (en) * 1991-05-17 1997-01-28 Nippon Steel Corporation Process for producing a print laminated steel strip used for the manufacture of a three-piece can body
US5752614A (en) * 1996-11-19 1998-05-19 Sonoco Products Company Easy-opening closure for hermetic sealing a retortable container
EP0875370A2 (en) 1997-04-28 1998-11-04 Showa Denko Plastic Products Co. Ltd. Metal-laminate composite container with easily openable plastic top
US5927536A (en) * 1995-02-22 1999-07-27 Nippon Steel Corporation Metal easy open can lid superior in can openability and process for production of thereof
US5976651A (en) * 1995-06-30 1999-11-02 Sumitomo Bakelite Company Limited Propylene packaging laminate comprising methylpentene resin blend layer
US6302321B1 (en) * 1999-10-11 2001-10-16 Sonoco Development, Inc. Sealant layer for container lid
WO2002000512A1 (en) * 2000-06-26 2002-01-03 Alcan International Limited Can with peelably bonded closure
WO2003006329A2 (en) * 2001-07-13 2003-01-23 Alcan International Limited Can and can lid with peelably bonded closure and also a method of producing a can
US20040022604A1 (en) * 2002-07-30 2004-02-05 Sinsel John A. Polymeric coating formulations and steel substrate composites
US6723441B1 (en) * 1999-09-22 2004-04-20 Nkk Corporation Resin film laminated metal sheet for can and method for fabricating the same
US20040211780A1 (en) * 2001-08-16 2004-10-28 Timothy Turner Can end
US20050150891A1 (en) * 2003-12-16 2005-07-14 Amcor Flexibles Europe Packaging having a perforable lid
US20050242097A1 (en) * 2004-04-30 2005-11-03 Sonoco Development, Inc. Container closure with dual heat seal and magnetic seal
WO2007020955A1 (ja) * 2005-08-12 2007-02-22 Jfe Steel Corporation ２ピ−ス缶用ラミネート鋼板及び２ピ−スラミネート缶
US20090061133A1 (en) * 2005-08-12 2009-03-05 Jfe Steel Corporation A Corporation Of Japan Two-piece can, method for manufacturing same, and steel sheet therefor
US20090250464A1 (en) * 2006-07-13 2009-10-08 Impress Metal Packaging Sa container lids equiped with a peelable membrane
US20090261099A1 (en) * 2006-02-03 2009-10-22 Impress Metal Packaging S.A. Expandable container having lid for providing headspace control in a food can
US20110127268A1 (en) * 2008-06-03 2011-06-02 Valspar Sourcing, Inc. Easy-Open Container and Container Coating
US20120043324A1 (en) * 2010-08-18 2012-02-23 Silgan Containers Llc Container with Reduced, Peel-Off-Force Tear Configuration
US20120193360A1 (en) * 2010-03-18 2012-08-02 Impress Group B.V. Closure for an Easy Opening Container and a Container Provided with Such Closure
US8287220B2 (en) * 2009-07-09 2012-10-16 Soudronic Ag Method and device for manufacturing peel-off lids
EP2517973A1 (en) * 2009-12-21 2012-10-31 Daiwa Can Company Seal lid provided with ring-shaped tab
US8413834B2 (en) * 2006-09-29 2013-04-09 Soudronic Ag Container with a tear-off lid and method for its production
US20130248533A1 (en) * 2010-11-29 2013-09-26 Crown Packaging Technology , Inc. Closure
US8551281B2 (en) * 2003-08-18 2013-10-08 Nippon Steel & Sumitomo Metal Corporation Laminated metal sheet and method of production of same
US10227156B2 (en) * 2013-02-28 2019-03-12 Jfe Steel Corporation Laminated metal sheet for two-piece can and two-piece laminated can body
US20190091969A1 (en) * 2016-04-04 2019-03-28 Tata Steel Ijmuiden B.V. Process for producing a polymer-coated metal strip and a polymer-coated metal strip produced thereby
US20200189791A1 (en) * 2017-06-09 2020-06-18 Envican Gmbh Pressure-resistant container
US20200338863A1 (en) * 2017-12-15 2020-10-29 Jfe Steel Corporation Resin-coated metal sheet for container
US20210016543A1 (en) * 2019-07-16 2021-01-21 Sonoco Development, Inc. Fracture film for peelable membrane containers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2003415A (en) * 1977-09-02 1979-03-14 American Can Co Improvements relating to the manufacture of containers
US4755435A (en) * 1984-11-12 1988-07-05 Kansai Paint Co., Ltd. Process for coating steel panels
JPS63138948A (ja) * 1986-12-02 1988-06-10 大日本印刷株式会社 金属蓋を有するプラスチツク容器及びその製造法
JPH072196Y2 (ja) * 1991-02-20 1995-01-25 東洋製罐株式会社 内容物の保存性に優れた多層容器
JP3687133B2 (ja) * 1995-05-23 2005-08-24 東洋製罐株式会社 密封方法
US8956729B2 (en) * 2009-05-11 2015-02-17 Nippon Steel & Sumitomo Metal Corporation Surface-treated metal material and process for producing the same
TW201630725A (zh) * 2014-12-26 2016-09-01 新日鐵住金股份有限公司 食品容器用薄膜積層金屬板、以及使用其之旋轉蓋及罐蓋
JP6650286B2 (ja) * 2016-02-08 2020-02-19 東洋鋼鈑株式会社 有機樹脂被覆鋼板およびその製造方法、並びにこの有機樹脂被覆鋼板を用いた缶及び缶蓋
JP7011903B2 (ja) 2017-07-21 2022-01-27 フォルシアクラリオン・エレクトロニクス株式会社 情報制御装置、及び情報制御方法

Patent Citations (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3547305A (en) * 1968-11-15 1970-12-15 Continental Can Co Easy opening container
US3580464A (en) * 1969-03-17 1971-05-25 Owens Illinois Inc Hermetically sealed composite container
US3832963A (en) * 1971-10-19 1974-09-03 Aluminum Co Of America Thermally treated container wall
US3861976A (en) * 1971-10-19 1975-01-21 Aluminum Co Of America Laminated container wall
US4451506A (en) * 1979-06-30 1984-05-29 Toyo Seikan Kaisha Ltd Side seam-coated welded cans and process for preparation thereof
US4403710A (en) * 1981-05-13 1983-09-13 Toyo Seikan Kaisha Ltd. Easily-openable heat seal lid
US4692132A (en) * 1982-06-30 1987-09-08 Toyo Seikan Kaisha, Ltd. Process for preparing a sealed laminated vessel
US4588621A (en) * 1983-02-10 1986-05-13 Compagnie Francaise De Raffinage Container body of the composite type and container comprising said body
US4501375A (en) * 1983-02-15 1985-02-26 Toyo Seikan Kaisha, Ltd. Easily-openable heat-seal lid
US4589568A (en) * 1983-04-23 1986-05-20 Terumo Corp. Package
US4741934A (en) * 1985-04-19 1988-05-03 Nippon Steel Corporation Steel sheet for making cans, cans and a method making cans
US4658434A (en) * 1986-05-29 1987-04-14 Grain Security Foundation Ltd. Laminates and laminated articles
US4945008A (en) * 1987-10-15 1990-07-31 Cmb Packaging (Uk) Limited Laminated metal sheet
US4957820A (en) * 1987-10-15 1990-09-18 Cmb Foodcan Plc Laminated metal sheet
US4980210A (en) * 1987-10-15 1990-12-25 Cmb Foodcan Plc Laminates of polyolefin-based film and metal and processes for producing such laminates
US5079052A (en) * 1987-10-15 1992-01-07 Cmb Foodcan Plc Laminated metal sheet
US5093208A (en) * 1987-10-15 1992-03-03 Cmb Foodcan Plc Laminated metal sheet
US5100708A (en) * 1987-10-15 1992-03-31 Cmb Foodcan Plc Laminated metal sheet
EP0408268A2 (en) * 1989-07-10 1991-01-16 CarnaudMetalbox plc Method and apparatus for manufacturing a ring for a container closure
US5069355A (en) * 1991-01-23 1991-12-03 Sonoco Products Company Easy-opening composite closure for hermetic sealing of a packaging container by double seaming
US5597436A (en) * 1991-05-17 1997-01-28 Nippon Steel Corporation Process for producing a print laminated steel strip used for the manufacture of a three-piece can body
US5348809A (en) * 1991-11-08 1994-09-20 Nippon Steel Corporation Sheet steel easy open can lid superior in can openability and not requiring repair coating of inner and outer surfaces
US5582319A (en) * 1992-03-06 1996-12-10 Carnaudmetalbox Plc Can end formed from laminated metal sheet
US5927536A (en) * 1995-02-22 1999-07-27 Nippon Steel Corporation Metal easy open can lid superior in can openability and process for production of thereof
US5976651A (en) * 1995-06-30 1999-11-02 Sumitomo Bakelite Company Limited Propylene packaging laminate comprising methylpentene resin blend layer
US5752614A (en) * 1996-11-19 1998-05-19 Sonoco Products Company Easy-opening closure for hermetic sealing a retortable container
EP0875370A2 (en) 1997-04-28 1998-11-04 Showa Denko Plastic Products Co. Ltd. Metal-laminate composite container with easily openable plastic top
JPH10305871A (ja) 1997-04-28 1998-11-17 Showa Denko Plast Prod Kk プラスチックイージーオープン蓋付ラミネート金属複合容器
US6723441B1 (en) * 1999-09-22 2004-04-20 Nkk Corporation Resin film laminated metal sheet for can and method for fabricating the same
US6302321B1 (en) * 1999-10-11 2001-10-16 Sonoco Development, Inc. Sealant layer for container lid
WO2002000512A1 (en) * 2000-06-26 2002-01-03 Alcan International Limited Can with peelably bonded closure
WO2003006329A2 (en) * 2001-07-13 2003-01-23 Alcan International Limited Can and can lid with peelably bonded closure and also a method of producing a can
US20040211780A1 (en) * 2001-08-16 2004-10-28 Timothy Turner Can end
US20040022604A1 (en) * 2002-07-30 2004-02-05 Sinsel John A. Polymeric coating formulations and steel substrate composites
US8551281B2 (en) * 2003-08-18 2013-10-08 Nippon Steel & Sumitomo Metal Corporation Laminated metal sheet and method of production of same
US20050150891A1 (en) * 2003-12-16 2005-07-14 Amcor Flexibles Europe Packaging having a perforable lid
US20050242097A1 (en) * 2004-04-30 2005-11-03 Sonoco Development, Inc. Container closure with dual heat seal and magnetic seal
WO2007020955A1 (ja) * 2005-08-12 2007-02-22 Jfe Steel Corporation ２ピ−ス缶用ラミネート鋼板及び２ピ−スラミネート缶
US20090061133A1 (en) * 2005-08-12 2009-03-05 Jfe Steel Corporation A Corporation Of Japan Two-piece can, method for manufacturing same, and steel sheet therefor
US20090261099A1 (en) * 2006-02-03 2009-10-22 Impress Metal Packaging S.A. Expandable container having lid for providing headspace control in a food can
US20090250464A1 (en) * 2006-07-13 2009-10-08 Impress Metal Packaging Sa container lids equiped with a peelable membrane
US8413834B2 (en) * 2006-09-29 2013-04-09 Soudronic Ag Container with a tear-off lid and method for its production
US20110127268A1 (en) * 2008-06-03 2011-06-02 Valspar Sourcing, Inc. Easy-Open Container and Container Coating
US8287220B2 (en) * 2009-07-09 2012-10-16 Soudronic Ag Method and device for manufacturing peel-off lids
EP2517973A1 (en) * 2009-12-21 2012-10-31 Daiwa Can Company Seal lid provided with ring-shaped tab
US20120193360A1 (en) * 2010-03-18 2012-08-02 Impress Group B.V. Closure for an Easy Opening Container and a Container Provided with Such Closure
US20120043324A1 (en) * 2010-08-18 2012-02-23 Silgan Containers Llc Container with Reduced, Peel-Off-Force Tear Configuration
US20130248533A1 (en) * 2010-11-29 2013-09-26 Crown Packaging Technology , Inc. Closure
US10227156B2 (en) * 2013-02-28 2019-03-12 Jfe Steel Corporation Laminated metal sheet for two-piece can and two-piece laminated can body
US20190091969A1 (en) * 2016-04-04 2019-03-28 Tata Steel Ijmuiden B.V. Process for producing a polymer-coated metal strip and a polymer-coated metal strip produced thereby
US20200189791A1 (en) * 2017-06-09 2020-06-18 Envican Gmbh Pressure-resistant container
US20200338863A1 (en) * 2017-12-15 2020-10-29 Jfe Steel Corporation Resin-coated metal sheet for container
US20210016543A1 (en) * 2019-07-16 2021-01-21 Sonoco Development, Inc. Fracture film for peelable membrane containers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Geometrical Product Specifications (GPS)-Surface texture: Profile method-Terms, definitions and surface texture parameters", JIS B 0601, 2013, total 27 pages.

Also Published As

Publication number Publication date
WO2020162524A1 (ja) 2020-08-13
CN113195228A (zh) 2021-07-30
EP3922455A1 (en) 2021-12-15
JPWO2020162524A1 (ja) 2021-02-18
JP6753557B1 (ja) 2020-09-09
EP3922455C0 (en) 2024-06-19
EP3922455A4 (en) 2022-11-23
US20220033136A1 (en) 2022-02-03
CN113195228B (zh) 2022-12-20
EP3922455B1 (en) 2024-06-19

Similar Documents

Publication Publication Date Title
JP2570841B2 (ja) 積層金属シート
KR960000730B1 (ko) 적층 금속판체
DK166574B1 (da) Laminat af metalfolie og polymere, beholder eller komponent til samme fremstillet af dette laminat og fremgangsmaade til fremstilling af laminatet
US5059460A (en) Laminated metal sheet
CA1311674C (en) Laminated metal sheet
JPH0822581B2 (ja) ポリオレフィンを主にしたフィルムと金属との積層体と、その積層体の製法
JPWO2014024913A1 (ja) 多層紙容器
US11697539B2 (en) Heat sealed lid and can
US12030702B2 (en) Can lid made of resin laminate steel sheet for resin-metal composite container, can bottom made of resin laminate steel sheet for resin-metal composite container, and resin-metal composite container
JP7040222B2 (ja) ヒートシール容器用缶体およびヒートシール容器
CN215476311U (zh) 杯状容器
JP6070903B2 (ja) 食品容器用フィルムラミネート金属板、および、これを用いたツイストキャップおよび缶蓋
WO1997044190A1 (fr) Plaque metallique revetue de resine thermoplastique, et appareil et procede de fabrication
JPH0631362A (ja) 密着性の優れたラミネート鋼板製多段絞り缶の製造方法
JPH04105931A (ja) Ｅｏｅ用複合鋼板及び製造法
JPH05269858A (ja) 加工密着性に優れた樹脂被覆鋼板の製造方法
JPH01232035A (ja) 耐エナメルフェザリング性に優れた飲料缶用アルミニウムエンド材
HRP930109A2 (en) Laminated metal sheet
JPH11124134A (ja) 易開口性容器蓋
HRP930114A2 (en) Laminated metal sheet
HRP930107A2 (en) Laminated metal sheets

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

AS Assignment

Owner name: NIPPON STEEL CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KADOWAKI, NOBUO;IWAKIRI, KAZUSHI;MIZUTANI, TOMOHIRO;AND OTHERS;REEL/FRAME:056116/0301

Effective date: 20210415

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS

STPP Information on status: patent application and granting procedure in general

Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT RECEIVED

STPP Information on status: patent application and granting procedure in general

Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED

STCF Information on status: patent grant

Free format text: PATENTED CASE